- 期刊
結合氣象衛星影像與地面觀測資料進行臺大實驗林溪頭－杉林溪地區空氣污染分布相關性之研究
Study on Assessing the Spatial Correlation of Air Pollution in Xitou-Sunlinksea Area by Combing the Meteorological Satellite Imagery and Ground Measurement Data
摘要
本研究利用2016年度溪頭－杉林溪地區地面測站冬季與夏季連續48小時之SO_2與O_3濃度資料和對應時間之向日葵8號衛星波段資料，分析兩者在不同測站與季節兩者污染物濃度與衛星網格雲頂溫度之相關性，研擬未來以衛星影像資料推求污染物濃度之可行性。經分析結果顯示兩季兩者之相關係數仍有差異：以小時均值而言第一季SO_2以苗圃站之相關係數0.679為最高，第二季O_3以天文台相關係數為-0.521為最高；以10分鐘空氣污染物與衛星雲頂溫度而言其相關性略低；以空間尺度而言，單站與集水區均值兩者之趨勢並不明顯；以溪頭谷地之不同海拔高度測站資料而言，其相關性仍有所差異。研究後續將透過長期連續之觀測資料來探索在未設站位置利用衛星資料推求其餘空污濃度之可行性。
並列摘要
This study analyzed the correlation of air pollutants of SO_2 and O_3 collected from ground stations for 48-hours and corresponding cloud top temperature of Himawari-8 meteorological satellite imagery in winter and summer of 2016 at Xitou and Sun-Link-Sea area. The goal is to assess the possibility of estimating air pollutants in ungauged sites using meteorological satellite imagery. The result indicated that a difference existed between winter and summer seasons. It also showed that the best correlation coefficient of cloud top temperature of satellite imagery for SO_2 at Xitou Nursery is 0.679 for 2016 winter; correlation coefficient of O_3 is -0.521 at Xitou Observatory for 2016 summer. The correlation coefficient of 10-minute interval is slightly lower than that of hourly interval. For the spatial scale, the trend of correlation of individual station and the average of the watershed is not significant. Further long-term continuous observation is yet to be analyzed to assess the possibility to estimate air pollutants in ungauged sites using meteorological satellite imagery.
延伸閱讀
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